When speaking of the decision post-match, Simeone said: It's tough to know what to say.

"The ref decided to send off Vrsaljko and I thought an Arsenal player should have got a booking. When I protested he sent me off."

Both Arsenal and Atletico are facing fines for the behaviour of their fans during the first leg, with the Gunners charged for fans setting off fireworks while the Spaniard's supporters throwing objects onto the pitch has landed them in trouble.